I'm going to join the challenge and make a case for my new Knitpro interchangeable knitting needles.
I bought just the sizes I'll use, rather than splashing out on a full kit, so don't have a case to keep them tidy. I've found a tutorial on YouTube to follow
The colours may end up a bit random as I'll just use up scraps I have left over. It will be small, useful and frugal!